Sole roughing machine



June 30, 1936. w Q CARD JR 2,046,147

SOLE ROUGHING MACHINE Filed June 29, 1933 5 Sheets-Sheet l June 30, 1936. w CARD, JR 2,046,147

SOLE ROUGHING MACHINE Filed June 29, 1933 3 Shegts-Sheet 2 INVENTOR ATTORNEYS June 30, 1936.

W. C. CARD, JR

SOLE ROUGHING MACHINE Filed June 29, 1955 5 Sheets-Sheet 3 INVENTOR Mafia. BY we W ATTQZfNEYS Patented June 30, 1936 UNETED STATES PATENT OFFICE SOLE ROUGHING MACHINE Application June 29, 1933, Serial No. 678,161

22 Claims.

This invention relates to sole roughing ma chines of the type used in the manufacture of cemented shoes for roughing surfaces of the shoe sole in order better to enable it to form a firm adhesive union with other shoe parts.

In the manufacture of shoes by the process in which the shoe is held to the upper by cement, it is desirable that the surface of the leather of either the sole or the upper, or both, shall be' 5 vide a device of this kind which is adapted uniformly to rough surfaces of soles even when these surfaces are of varied contour as when preliminary skiving or scarfing operations have been performed on the sole.

Another object of the invention is to provide a roughing machine having means for positively feeding a sole to the roughing device.

More specifically, the invention has for an object the provision of a sole roughing-machine equipped with feeding means for the sole, in which the operating speed of the roughing tool and the feeding speed of such means are correlated in order to effect uniform roughing.

Other objects 'of the invention will in part be obvious and will in part appear hereinafter.

The invention accordingly comprises the features of construction, combination of elements, and arrangement of parts, which will be exemplified. in the construction hereinafter set forth and the scope of the application of which will be'indicated in the claims.

For a fuller understanding of the nature and objects of the invention, reference should be had to the following detailed description taken in connection with the accompanying drawings, in which: 7

. Fig. l is a side elevation of a sole roughing machine embodying features of the present invention, certain parts thereof being shown in vertical section in order more clearly to illustrate the structural features;

Fig. 2 is a fragmentary detail showing one stage in the operation of the work supporting means of the present machine;

Fig. 3 is a plan view with parts broken away of a modified form of driving mechanism for the feed wheel;

Fig. 4 is a front elevational view of a modified form of the shoe sole support;

Fig. 5 is a side elevational view of the structure depicted in Fig. 4;

Fig. 6 is a front elevation of the machine shown in Fig. 1;

Fig. 7 is a fragmentary horizontal sectional view taken substantially along line '|-l of Fig. l; and

Fig. 8 is a fragmentary vertical sectional view taken substantially along line 88 of Fig. 1.

Referring more particularly to the drawings, there is shown a frame I0 having at its upper end a pair of laterally arranged idler pulleys, one of these being shown at H. A driving belt (not shown) is adapted to be guided over idler pulleys ll about a driven pulley [2, so as to impart rotary movement thereto, some suitable driving means such as an electric motor (not shown) being utilized to impart driving power to the belt. Pulley i2 is keyed to the upper end of a rotary spindle l3 which is mounted in a vertical journal it integral with frame 10. This spindle is supported vertically on an adjustable spindle sleeve l5 which is threaded into journal it. A spindle sleeve lock nut I6 is provided to lock the sleeve in any desired vertical position. The pulley l2 rests indirectly against the spindle sleeve through an interposed ball bearing race ii, and an additional ball bearing race I8 is located between an under surface of the spindle sleeve and a collar l9 affixed to the spindle. By virtue of this arrangement, the vertical position of the spindle is made dependentupon the vertical height to which spindle sleeve I5 is adjusted. At its lower end spindle l3 carries a needle head 20 which has projecting downwardly therefrom a plurality of roughing needles 2i, these parts forming a movable roughing tool. These needles preferably terminate in a common horizontal plane and are adapted to engage that portion of the surface of an outer sole which is to be roughened, as will more clearly hereinafter appear.

The rougher is equipped with work supporting means for holding a sole in operative position against the roughing needles. In the illustrated embodiment, this supporting means comprises a frame casting 22 which is adapted to be readily fastened to and may be regarded as a part of frame l0. Casting 22 has a pair of internally threaded vertical openings 23 and 23 extending therethrough; A' vertically adjustable external sleeve 25 is screwed to the upper end of opening 23 and is equipped with a lock nut 257 which is adapted to hold in any desired vertical position. slidably mounted for vertical movement within sleeve 25 is a plunger 25 having an axle journal 27 at its upper end. An axle 28 is mounted in this journal, and has a sole engaging roller 29 freely rotatable thereon. The periphery of roller 29 is cylindrical, and is substantially parallel with the working face of the roughing tool. A stop pin 30 is passed through plunger 26 and is adapted to abut the lower end of sleeve 25 to limit upward movement of the plunger and its associated roller. Screwed upwardly into the lower end of opening 23 is a spring seat or thimble 3i which is adapted adjustably to be held in any desired vertical position by means of a spring seat lock nut 32. A coil compression spring 33 is interposed between spring seat 3i and plunger 25 and acts normally to urge the latter upwardly. Opening 24% is provided with substantially simiiar equipment comprising a vertical adjustable sleeve 3% adapted to be held in any desired position by means of a lock nut 35. A plunger 36 extends slidably within sleeve 34, and carries at its upper end an axle journal 31 in which is mounted an axle 3B. A second work supporting roller 39, independent of roller 29, is mounted for free rotation on axle 38. Roller 39 has a preferably conical periphery which is adapted to engage opposite the outer edge of the portion of the sole surface which is to be roughened. The rollers 29 and 39 are juxtaposed face to face with the larger side of roller 39 located away from reller 39. Plunger 36 is equipped with a stop pin 33 which is adapted to abut against the lower end of sleeve 3% to arrest upward movement of this plunger. Screwed into the lower end of threaded opening '24 is an externally threaded spring seat or thimble M which is adapted to be held in any vertically adjusted position by means of a spring seat lock nut 42. A coil compression spring 33 is interposed between seat ll and plunger 33 and acts normally to urge the latter upwardly. L desired, this spring may be made somewhat stronger than spring 33, either through adjustment or through its inherent design. A link 34 is fastened to plunger 36 and is adapted to beconnected with a treadle or other device in order to enable the operator to depress this plunger when desired. A stop collar 35 is .fastened to plunger 36 to prevent undue downward movement thereof. As illustrated, juxtaposed rollers 23 and 39 combine to provide a movable vertically yieldable work support. The outer bevelled conical roiier 39 engages beneath the outer marginal portion of the sole which is to be roughened, and is adapted to press up beneath the outer scarfed portions of the sole at such times as these portions are located thereover. A work supporting table 36 is located approximately in the plane of the uppermost peripheries of rollers 29 and 39 and is supported for vertical adjustment by means of a plurality of posts, such as ll, which are slidably positioned in vertical bores passing through conveniently located ears on casting 22, as illustrated. Springs ll are associated with each post 41, and are interposed between table 66 and casting 22, so as normally to urge the former upwardly. The normal height of the table is ad-- justably controlled by means of stop nuts ll" threaded on the lower ends of posts ll so as to come into limiting abutment with the under side of casting 22. This construction enables the table 46 to be normally located in proper horizontal association with supports 29 and 39, but permits depression thereof to afford greater freedean of movement of the work, if needed. Table 36 has an opening 48 which accommodatm and through which projects the upper parts of support rollers 29 and 39 as illustrated. A sole guide,

- such as a roller 49 is mounted on table 46 adjacent to roller 39, and is adapted to engage the periphery of a sole to control the lateral position of such sole between the work support and the roughing tool.

A needle guard 50 preferably is located adjacent the lower ends of needles 2|, and has an opening therethrough so that such needles can project downwardly therebeyond to a desired extent. This needle guard serves to control the vertical position and to prevent undue upward movement of the treated sole toward the needles. It is clamped by means of a stud screw 5| to a post 52 located on a forwardly projecting arm 53 of frame.

53. Stud screw 5i passes through a vertical slot in needle guard as and is adaptedto clamp the latter in any desired adjusted vertical position. The arm 53 of frame 10 preferably is hollow and has its forward face open and in communication with some suitable air exhaust means for carrying away flying particles from the neighborhood of the roughing tool needle head.

Means are provided for positively feeding the 1 sole beneath the roughing tool at a. determined speed. This means includes a worm gear sleeve 5% threaded over and keyed to spindle Hi. This worm gear is in mesh with and is adapted to rotate a driving gear'55 mounted on a shaft 56 which carries at its forward end a pinion 51. In

the presently illustrated embodiment, pinion 5i meshes with a relatively larger idler gear 53 which in turn meshes with a relatively smaller driving gear 59. Gear 59 has fastened to it for movement therewith a feeding wheel or roller 80, the periphery of which is milled, or toothed, or otherwise suitably roughened for firm frictional engagement against the top of a sole. This entire gear train, with the exception of worm 54, is mounted in a housing 6i, and this housing unit is adapted to be fastened to journal M of frame 10 by suitable bolts and screws. Since feed wheel 69 derives its feeding movement from roughing tool spindle i3, the operating speed of this tool and-- the feeding speed of the feed wheel are correlated. This constitutes a marked advantage as to the uniiormity of the roughing action obtained. With the best previously available roughing devices, it

has been customary for the operator to feed the a margin of the sole around beneath the roughing tool by hand. This procedure frequently resulted in uneven roughing of the sole, some parts thereof In operation of the machine, a sole, designatedlii, is laid on table 36 and slid transversely until its periphery abuts against the guide roller d3.

. when in this position, is located above work supporting rollers 29 and 39 and beneath the roughing tool needle head and the feed roller. The needle guard 50 is then adjusted so as lightly to engage against the upper face of the sole. Spindle I3 is then vertically adjusted at l5 and i6 so as to bring the points of needles 2| a proper distance below this needle guard where they are adapted to bite into and rough the fibers on the upper marginal surface of the sole. The vertical heights of rollers 29 and 39 are suitably adjusted by means of sleeves 25 and 34. Spring seat 3| is adjusted so as suitably to tension spring 33 and cause work supporting roller 29 firmly to press the outer sole against feed wheel 66. Spring seat :3! also is suitably adjusted to tension spring 33 so as to cause work supporting roller 39 to bear against the outer sole with the proper pressure to obtain the desired roughing quality. These springs need not be under the same tension. With the parts thus in adjusted position, a number of corresponding soles may be successively operated on, a new adjustment being required only when soles of quite different thickness from those previously handled by the machine are introduced. With the machine thus in readiness, rotation of spindle 53, which is driven by its pulley l2 and its associated power driving mechanism, effects a roughing action on the upper marginal portion of the outer sole 6!, and also effects rotation of feed wheel 60. The sole 6| is firmly clamped between this feed wheel or roller 60 and the roller 29 and movement of the former causes the clamped sole to be fed forwardly beneath the roughing tool, the periphery of the sole being at all times kept in contact with guide roller d9. Outer soles are customarily scarfed'or beveled at the shank portion, while they are of more uniform cross section at their foreparts. The roughing operation may begin at one side of the sole at or near the forward part of the heel seat portion, and continues along the shank portion around the entire forepart of the sole and along the shank portion on the other side of the sole, terminating just forwardly of the heel seat portion. It thus is desirable to present sole portions of varied thickness against the rotating needles 2i and this is successfully done by the presently described independent spring pressed cylindrical and conical rollers 29 and 39. As shown in Fig. l, a scarfed shank portion of the sole is being treated, the upper surface thereof which is to be roughed being downwardly beveled at its sides as indicated at 52. Here the spring pressed conical roller fiexes the tapered edge of the sole upwardly so that its upper surface which is to be roughened is held flat adjacent the needle guard til. When an unscarfed, or relatively lightly scarfed portion of the shoe is being roughed, the spring pressed work supporting rollers 29 and 39 assume the relative positions shown in Fig. 2, conical roller 39 being here depressed with respect to roller 29 so that only its higher edge bears against the under surface of the sole. If for any reason, roller 39 should press too hard against the sole during a roughing operation, the operator may depress link 34 and relieve the pressure of this element against the sole. Operation of this link may also be desirable upon initial insertion of a sole in the rougher.

When a loading of the roughing tool is desired a spring loading of the vertical shaft [13 is preferably provided by mounting a coil spring 63 (see Fig. 3) on the shaft I3 between the vertical journal id and the needle head 23. With the use of such structure it is desirable to drive the feed wheel 60 through the gears 51, 58 and 59 from the same source of power used to drive the pulley l2 rather than from the shaft l3, which latter will be suitably mounted for limited relative vertical movement with respect to its journal l4. As illustrated in Fig. 3, the shaft I3 may be mounted in its journal in the same manner as that shown in Fig. 1, except that the worm 54 is discarded, and stop collar I 9 is positioned somewhat lower on the shaft, out of abutment with race H3 (or spindle sleeve I5 if the race is not used) to allow a certain amount of spring resisted upward movement of the shaft. It has been found that a spring pressed needle head gives improved roughing results. A gear 54 fixed to rotate with the pulley H drives the gear 51 through the shaft 56', a gear 65 fixed thereto, a worm gear 66 in mesh with the gear 65, a gear fixed to the worm gear 66, and a gear 68 in mesh with the gears El and 66.

A modified form of work support is shown in Figs. 4 and 5. The stationary support 39' is to be substituted for the supporting roller 39 in the above described machine to cooperate with the roller 29. The support 39 consists of a spider structure having a plurality of legs 69, ill, H and 12, each being provided with a different periph eral slope to accommodate variations in the skived angle on the shoe soles. The support 39' is provided with a laterally extending axle 38' received by the axle journal 31!. A circumferentially extending toothed collar 13 fixed to the support 39 co-operates with a toothed collar i l fixed to the journal 3i to hold the support in a stationary position when the teeth of the collars It and it are held in engagement by a set screw it. When the screw it: is loosened the support 33' can be pulled away from the journal 3? a distance sufficient to allow the teeth of collar 13 to clear those of collar Hi and then rotate until .the arm having the desired peripheral slope is in proper position. The support 39' is then secured in this position in the manner set forth above.

It will be seen that there has been provided a sole roughing machine which is admirably adapted to fulfill its, intended functions. Since certain changes may be made in the above construction and different embodiments of the invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawing shall be interpreted as illustrative and not in a limiting sense.

Thus, it will be obvious that the combination of elements comprising the work-supporting means shown is generally well suited to hold soles having varied thickness, because of shanking or like operations against various tools or devices used for operating on or handling such soles. Also, such supporting means, to ether with the presently shown and claimed feeding means is generally useful in presenting soles of this type to various devices familiar in the sole-treating field, such as roughers, fluid applicators and the like.

It is also to be understood that the following claims are intended to cover all of the generic and specific features of the invention herein described, and all statements of the scope of the invention which, as a matter of language, might be said to fall therebetween.

Having described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. A machine for roughing the marginal portion of soles, comprising a vertical rotatable needle head overlying such marginal portion only, power means for driving said head at operating speed, a support for holding such sole against said head, and mechanism for steadily feeding said marginal portion around beneath said head at a speed proportionate to said operating speed.

2. A machine for roughing the marginal portion of soles, comprising a vertical rotatable needle head overlying such marginal portion only, power mean-s for driving said head, and power driven feed means for continuously feeding said marginal portion around beneath said head.

3. A machine for roughing the marginal portion of soles, comprising a vertical rotatable needie head overlying such marginal portion only,

power means for driving said head, a power driven feed wheel adapted to engage said sole adjacent such marginal portion and steadily feed such portion around beneath said head, and a spring biased work support for pressing work against said head and said feed wheel.

4. A machine for roughing the marginal portion of soles, comprising a vertical rotatable needle head overlying such marginal portion only, power means for driving said head at operating speed, a feed wheel adapted to engage said sole adjacent such marginal portion and steadily feed such portion around beneath said head, power means for driving said wheel at a speed proportionate to said operating speed, and a work support for pressing work against said head and said feed wheel.

5. A machine for roughing the marginal portion or soles, comprising a rotatable spindle, a needle head mounted thereon opposite su'ch mar ginal portion only for rotation about an axis substantially perpendicular to the plane of the sole, power means for rotating said spindle at operating speed, a feed wheel for feeding said marginal portion around past said head, and a speed reducing gear train connecting said power means and said feed wheel to drive the latter at a lower speed than that of the spindle.

6. A machine for roughing the marginal portion of soles, comprising a power driven vertical rotatable needle head, overlying said marginal portion, a work support having a rotatable portion, a narrow rotatable feed wheel in opposed relation to said work support portion and cooperable therewith to grip a sole only along the interior edge of said marginal portion, and power means for driving said feed wheel steadily to feed said marginal portion around beneath said head.

7. A machine for roughing the marginal portion of soles, comprising a power driven vertical rotatable needle head overlying said marginal portion, a work support underlying said head, a

' spring biasing said support toward said head,

ing means for pressing a sole against said head and said feeding device.

9. A sole roughing machine comprising a power driven roughing tool, a pair of independent vertically movable plungers, work supporting elements respectively mounted on said plungers in opposed relation to said tool and adapted'to hold a sole against said tool,-and means yieldably urging each of said elements toward said tool.

10. A sole roughing machine comprising a power driven roughing tool, a movable plunger having mounted thereon an outer supporting element for engaging a sole opposite the outer edge of the surface to be roughened, an inner supporting element independently movable of the outer supporting element for engaging the sole opposite the inner edge of said surface, and resilient means normally urging each of said elements toward said tool. I

11. A sole roughingmachine comprising a movable vertical spindle having a roughing tool on the lower end thereof, and a work support beneath said tool adapted to press a sole thereagainst, said support including a pair of juxtaposed rotatable rollers having their peripheries beneath said tool, independent vertically movable 12. sole roughing machine comprising a movable vertical spindle having a roughing tool on the lower end thereof, and a work support beneath said tool adapted to press a sole thereagainst, said support including a pair of juxtaposed elements having sole engaging faces located beneath said tool, independent vertically movable mountings for said elements, and means independently normally urging said elements toward said tool.

13. A sole roughing machine comprising a movable vertical spindle having a roughing tool on one end thereof, a work support opposite said tool adapted to press a sole thereagainst, said support including a pair of juxtaposed elements having sole engaging faces located opposite said tool, independent movable mountings for said elements, and means independently normally urging said elements toward said tool.

it. A sole roughing machine comprising a movable vertical spindle having a roughing tool on the lower end thereof, and a work support beneath said tool adapted to press a sole of varied thickness thereagainst, said support including 'an element having a bevelled periphery adapted to engage the outer margin of a sole, a roller having a cylindrical periphery adapted to engage such sole inwardly from said element, independent vertically movable mountings for said element and roller, and spring means urging said element and roller toward said tool.

15. A sole roughing machine comprising a frame, a power driven roughing tool mounted on said frame, and a work support adapted to press a sole of varied thickness thereagainst, said support including a pair of vertically adjustable sleeves mounted in said frame, a plunger slidable in each sleeve, a sole engaging support elementv carried at the upper end of each plunger, said elements being respectively located to bear against said sole opposite the outer and inner edges of the surface to be roughed, a stop for each plunger adapted to limit upward. plunger movement, a pair of verticallyadjustable spring seats on said frame respectively opposed to said plungers, and

a spring between each of said seats and its coraoeai ir responding plunger urging the latter upwardly. 16. A sole roughing machine comprising a I power driven roughing tool, a movable outer supporting element for engaging a sole opposite the outer edge of the surface to be roughened, resilient means normally urging said outer element toward said tool, a link connected with said outer element to effect retraction thereof away from said tool, and; an independent inner supporting element for engaging the sole opposite the inner edge of said surface.

1'2. A sole roughing machine comprising a power driven vertical rotatable needle head, a pair of independent vertically movable work supporting elements adapted to hold a sole against said head, means vieldably urging each of said elements toward said head, and a power driven feeding device adjacent said head and opposite one of sail supporting elements, said last named element acting to press the sole against said feeding device.

18. In a sole roughing machine a work support comprising a member adapted to be fixed in any one of a plurality of work supporting positions and having a plurality of bevelled faces of difierent pitchesselectlvely to accommodaw variations in the skived angle of soles.

19. In a'sole roughing machine a work support comprising a spider having a plurality of radially disposed arms each provided with a bevelled face of a pitch difierent from that oi the others, and means for selectively holdim said spider in a stationary position with a selected arm in a work supporting position.

20. A machine for operating on soles, comprising a device for treating a surface of such sole, and a pair of independent vertically movable plungers, sole-supporting elements respectively mounted on said plungers in opposed relation to said device and adapted to hold. such sole against said device, and means yieldably urging each of said elements toward said device.

21. A machine for operating on soles, compris-= ing a device for treating a surface of such sole, and a work support opposite said device adapted to press a sole thereagainst, said support including a pair of juxtaposed rotatable rollers having ent vertically movable mountings for said rollers,

and means independently norrnallz urging said rollers toward said tool.

22. A machine for operating on soles, comprising a device for treating a surface ofsuch sole, and a pair of independent verticalk, movable plungers, sole-supporting elements respectively mounted on said plungers in opposed relation to said device and adapted to hold such sole against said device, means yieldably urging each of said elements toward said device, a movable worksupportirig table, and spring means normally holding said table approximately in the plane of the work engaging portion of said supporting means.

WILLiMd C. QARD, J2. 

